diff --git a/src/parsing/preparse-data.cc b/src/parsing/preparse-data.cc
new file mode 100644
index 0000000..d02cd63
--- /dev/null
+++ b/src/parsing/preparse-data.cc
@@ -0,0 +1,80 @@
+// Copyright 2010 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "src/base/logging.h"
+#include "src/globals.h"
+#include "src/hashmap.h"
+#include "src/parsing/parser.h"
+#include "src/parsing/preparse-data.h"
+#include "src/parsing/preparse-data-format.h"
+
+namespace v8 {
+namespace internal {
+
+
+CompleteParserRecorder::CompleteParserRecorder() {
+  preamble_[PreparseDataConstants::kMagicOffset] =
+      PreparseDataConstants::kMagicNumber;
+  preamble_[PreparseDataConstants::kVersionOffset] =
+      PreparseDataConstants::kCurrentVersion;
+  preamble_[PreparseDataConstants::kHasErrorOffset] = false;
+  preamble_[PreparseDataConstants::kFunctionsSizeOffset] = 0;
+  preamble_[PreparseDataConstants::kSizeOffset] = 0;
+  DCHECK_EQ(5, PreparseDataConstants::kHeaderSize);
+#ifdef DEBUG
+  prev_start_ = -1;
+#endif
+}
+
+
+void CompleteParserRecorder::LogMessage(int start_pos, int end_pos,
+                                        MessageTemplate::Template message,
+                                        const char* arg_opt,
+                                        ParseErrorType error_type) {
+  if (HasError()) return;
+  preamble_[PreparseDataConstants::kHasErrorOffset] = true;
+  function_store_.Reset();
+  STATIC_ASSERT(PreparseDataConstants::kMessageStartPos == 0);
+  function_store_.Add(start_pos);
+  STATIC_ASSERT(PreparseDataConstants::kMessageEndPos == 1);
+  function_store_.Add(end_pos);
+  STATIC_ASSERT(PreparseDataConstants::kMessageArgCountPos == 2);
+  function_store_.Add((arg_opt == NULL) ? 0 : 1);
+  STATIC_ASSERT(PreparseDataConstants::kParseErrorTypePos == 3);
+  function_store_.Add(error_type);
+  STATIC_ASSERT(PreparseDataConstants::kMessageTemplatePos == 4);
+  function_store_.Add(static_cast<unsigned>(message));
+  STATIC_ASSERT(PreparseDataConstants::kMessageArgPos == 5);
+  if (arg_opt != NULL) WriteString(CStrVector(arg_opt));
+}
+
+
+void CompleteParserRecorder::WriteString(Vector<const char> str) {
+  function_store_.Add(str.length());
+  for (int i = 0; i < str.length(); i++) {
+    function_store_.Add(str[i]);
+  }
+}
+
+
+ScriptData* CompleteParserRecorder::GetScriptData() {
+  int function_size = function_store_.size();
+  int total_size = PreparseDataConstants::kHeaderSize + function_size;
+  unsigned* data = NewArray<unsigned>(total_size);
+  preamble_[PreparseDataConstants::kFunctionsSizeOffset] = function_size;
+  MemCopy(data, preamble_, sizeof(preamble_));
+  if (function_size > 0) {
+    function_store_.WriteTo(Vector<unsigned>(
+        data + PreparseDataConstants::kHeaderSize, function_size));
+  }
+  DCHECK(IsAligned(reinterpret_cast<intptr_t>(data), kPointerAlignment));
+  ScriptData* result = new ScriptData(reinterpret_cast<byte*>(data),
+                                      total_size * sizeof(unsigned));
+  result->AcquireDataOwnership();
+  return result;
+}
+
+
+}  // namespace internal
+}  // namespace v8.